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Program Highlights

Mechanisms of Mechanical Plasticity in Collagen Networks from Contractile Forces

A collaboration (Wells, Shenoy) in IRG 2 studied the mechanisms of mechanical plasticity in collagen networks resulting from contractile forces produced by cellular aggregates placed within them.

Field Trip Series

Starting in 2017, the LRSM and Singh Center for Nanotechnology hosted monthly field trips for Philadelphia middle and high school students.

Large-area synthesis of monolayer 1T'-WTe2 flakes

Large-area growth of monolayer films of transition metal dichalcogenides is important in the rapidly advancing research field of topological materials, because scientists believe tungsten ditelluride has so-called “topological” electronic states.

High-strength magnetically switchable plasmonic nanorods

Next-generation 'smart' nanoparticle systems should be precisely engineered in size, shape and composition to introduce multiple functionalities, unattainable from a single material.

Birefringent Stable Glasses with Predominantly Isotropic Molecular Orientation

Stable glasses produced by physical vapor deposition are important to understand. They exhibit optical birefringence, which traditionally implies that the constituent molecules are aligned.

Janus dendrimersomes as models for cell fusion and fission.

Vesicle fusion and fission processes often occur in biological systems, usually with the aid of specialized proteins. Percec, Klein, Hammer, and Baumgart carried out comprehensive fusion/fission experiments based on three membrane ingredients: hydrogenated (RH), fluorinated (RF), and hybrid-hydrogenated/fluorinated (RHF) Janus dendrimers (Figure – Top Left).

Shells of Cholesteric Liquid Crystals

Liquid crystals, fluids with aligned phases of rod-like constituent molecules, are used in everything from computer and television displays to mood rings. “Handedness” or chirality, is ubiquitous in complex biological systems and can be controlled and quantified in synthetic materials such as cholesteric liquid crystals.

Universal Signatures of Plasticity in a Wide Range of Disordered Solids

Researchers explore approaches to increase the toughness of disordered materials that are otherwise prone to fail in a catastrophic, brittle fashion.

Middle School Summer Program: Girard College and Pennsylvania School for the Deaf

Students from Girard College and the Pennsylvania School for the Deaf participate in lab experiments, materials science lessons, and visits to various Penn facilities. The primary purpose of the program is to introduce URG students to STEM at an early age. 

Tunable nechanics and dynamics in biopolymer-based nematic materials

At the University of Chicago MRSEC, we have shown that building blocks of the biopolymers, actin and microtubule, form lyotropic liquid crystals with controllable structure and mechanics.

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